Saltwater tank to freshwater

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jrpsaros

Feeder Fish
MFK Member
Mar 3, 2010
179
1
0
North Carolina
I have a 75 gallon tank that's set up as freshwater. It was previously used as a saltwater tank. It was cleaned out, but not as well as I would like because I live in an apartment and don't have access to a hose. I put some tetra's I got from pet-smart for 1 in there to help it cycle, and they immediately died. I tested the water, and the ammonia, ph, nitrates, and nitrates were all in the normal ranges. The only idea I can think of is there was still salt left in the tank, would this cause the fish to die? Any help would be great.
 
I just looked closer, and realized there is paint on the inside of the tank. It's an acrylic tank, I thought just the outside was painted, but he painted some of the inside too, could this be my problem? if so what can I do to fix it?
 
jrpsaros;4447931; said:
I just looked closer, and realized there is paint on the inside of the tank. It's an acrylic tank, I thought just the outside was painted, but he painted some of the inside too, could this be my problem? if so what can I do to fix it?

I spray paint stuff and put it in my tanks
 
Okay, So I guess that's not it. I used the same plumbing as him, so maybe it was just crap in the plumbing? What do you think about dumping some vinigar into the water, letting it run for awihle, draining it, scrubbing it, and then filling it back up?
 
I've heard vinegar helps with salt residue, but my question is why out of all the fish you could choose to help cycle a tank would you choose tetras? They're not the hardiest fish, not that any fish should be used to cycle a tank. I'd suggest you reclean the tank, let it cycle fishless first, and then add your fish. They would have a much better chance at survival
 
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